Vulcanizer.



l. C. LAURITZEN.

VULCANIZER.

AePLlcATloN FILED DEc.l2,19|1.

1 ,256304. Patented Feb. 19, 1918.

2 SHEETS-SHEET 2.

20 tions 40 with bottom closure 1,

iisraansiarnar eraaea- JOHN c. LAURITZEN, or AKRON, oHIo.

VULCANIZER.

Specification of Letters Patent.

Patented Feb. 19, 1918.

Application led December 1917. Serial No. 206,833.

and useful Improvements in Vulcanizers, of

which the following is a specification.

` My present invention relates to improvements in vulcanizing presses of the type used more especially for vulcanizingautomobile tires and aims to provide a simple,

efficient'. and economical construction which 1 will enable the use of a ram with a very short throw or stroke.

In previous press constructions of which I am aware it lhas been necessary to either provide material space beneath the vulcanizer for the location of theram, `l vate beneath the ground floor to provide such space, rendering the ram and pipe connecdiflicult t o install, especially where rock is encountered, and difficult of access.

My invention includes the novel features l 'of construction and arrangement and combination of parts hereinafter described and Vparticularl Adefined by the appended claims.

An embodiment of my invention is illustrated in the accompanying drawings, in

which, l

Figure 1 is a sectional elevation of my 1mproved vulcanizer.

Fig. 2 is a section on line 2--2 of Fig. 1.

Fig. 3 is a plan view of the mold carriage, and,

Fig. 4 is a sectional View of the same.

Referring by reference characters to this drawingv the numeral 1 designates the vulcanizer chamber, or press tank, which may be of the ordinary or any desired construction, except as hereinafter specified, and provided and top closure l", secured in position by any suitable means, as for instance the bayonet joint connections indicated at 1. The bottom closure 1a is supported upon a base 2, which detachably includes the ram cylinder 3, which, as shown is very short, and contains the ram piston 4,

which has its upper end projecting through the packing 5. A ram cap 6 is lsupported upon the upper end of the ram piston, preferably by means of the depending central portion 6a.

Supposing the ramcap to occupy the po- ,sition shown in full lines in Fig. 1. and the4 space between it and the pressure flanges 1d of the top closure or cover to be filled with 'superposed molds, it is only necessary to C. LAURITZEN,

,lower the ram cap the height `and repeat the operation for each successive or to excaupon shallbe capable of being raised to the top of the press tank in loading and unloading, as the molds, with the'inclosed tires on their metal cores, are eXtremel' heavy, the practice in loading being to ring the ram cap to the level of the mouth of the press tank, to 'place` one mold in position and thereafter of one mold,

mold. The reverse operation takes place, in unloading.

To accomplish this elevation of the ram cap without the use of the ram I provide what I term a mold carrier, which is indicated at- 7, and which consists of a platelike memberhaving an 4open center 7a and strengthening ribs, which member engages or projects beneath the edges of the ram cap, so that when the carrier is moved vertically the ram cap will be elevated away from the ram piston. A

A simple and effective means which I have found desirable for elevating the carrier comprises a plurality of vertical screw 'rods 8 having their upper ends journaled in suitable bearings 8a carried at the top of the press tank, and projecting at their lower ends through suitable stuiiing boxes 8b. in the tank bottom, their lower ends being stepped in the bearings 8, these rods engaging split threaded bushings 7* secured in openings in the carrier. These projecting portions carry worm gears 9, which mesh with worms 10 on shafts 11, journaled in suitable bearings l1, which shafts may be driven by sprocket chains 12 from a counter shaft 13, carrying a gear 14, meshing with a gear 15 on the shaft of an electric motor16.

For convenience of illustration I have omitted the pipe connect-ions to the ram, as these form no'part of the present invention.

What I claim is:

1. In combination, a press tank, a ram cap therein, a ram having a movable element mounted, and means for elevating and lowering said ram cap, independently of said movable element.

2. In combination, a press tank, a ram cap therein, a ram having a movable element which said ram cap is removably upon which said ram cap is removably mounted, a carrier having a part projecting beneath the ram cap, and means for moving said carrier vertically.

In combination, a press tank, a ram cap therein, a ram having a movable element upon which said ram cap is removably mounted, va carrier having a part projecting beneath the ram cap, a plurality of vertical screw rods Within the press tank engaging l. said carrier, and means for simultaneously rotating said screw rods.

In testimony whereof, I afiix mysignature.

JOHN C. LAURITZEN. 

